504520403 has 2 divisors, whose sum is σ = 504520404. Its totient is φ = 504520402.

The previous prime is 504520369. The next prime is 504520427. The reversal of 504520403 is 304025405.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 504520403 - 2¹² = 504516307 is a prime.

It is not a weakly prime, because it can be changed into another prime (504520483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252260201 + 252260202.

It is an arithmetic number, because the mean of its divisors is an integer number (252260202).

Almost surely, 2^504520403 is an apocalyptic number.

504520403 is a deficient number, since it is larger than the sum of its proper divisors (1).

504520403 is an equidigital number, since it uses as much as digits as its factorization.

504520403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 504520403 is about 22461.5316263161. The cubic root of 504520403 is about 796.0852512373.

Adding to 504520403 its reverse (304025405), we get a palindrome (808545808).

The spelling of 504520403 in words is "five hundred four million, five hundred twenty thousand, four hundred three".